Zone 10a planting calendar

In zone 10a the last spring frost usually comes around January 24 and the first fall frost around December 27: about 348 frost-free days. Here is what to do each month.

Typical frost dates

Last spring frost
January 24 Middle half of the zone: Jan 8 – Jan 29. Over by Feb 24 in 9 of 10 years.
First fall frost
December 27 Middle half of the zone: Dec 21 – Jan 8 (the next year). After Dec 5 in 9 of 10 years.
Frost-free season
about 348 days
Coldest winter nights
30 to 35 °F
ZIP codes in the zone
1,234
Frost is rare in
677 of its ZIP codes; the dates are for the rest

Most of its weather stations are in California, Florida, Texas, Arizona and Louisiana.

Places in zone 10a

Zones measure winter cold, so frost dates still vary from place to place. A few weather stations across the zone:

Median frost dates at weather stations in zone 10a
PlaceStateLast spring frostFirst fall frostFrost-free days
MeccaCaliforniaJan 6Dec 22352
Imperial CountyCaliforniaJan 14Dec 24346
LaveenArizonaJan 14Dec 22343
Rockport Aransas CountyTexasJan 23Jan 1 (the next year)347
BurasLouisianaJan 25Jan 4 (the next year)346
GalvestonTexasJan 25Jan 1 (the next year)348
OrtonaFloridaJan 27Jan 11 (the next year)348
Kissimmee Prairie PreserveFloridaJan 30Jan 11 (the next year)347

Month by month in zone 10a

Every job for all 60 crops, in the month it starts.

January

Sow outside

Plant out

Start picking

February

Sow outside

Plant out

Start picking

March

Start picking

April

Start picking

May

Start picking

June

No new jobs this month; water deeply and mulch against the heat.

July

No new jobs this month; water deeply, mulch and keep picking.

August

Sow for fall

September

Sow for fall

October

Sow for fall

November

Start indoors

Sow for fall

Start picking

December

Start indoors

Sow outside

Plant out

Sow for fall

Start picking